behemoth

noun:
1. A huge or monstrous creature.
2. Something large and powerful, as an organization.

ETYMOLOGY:

From Hebrew behemoth, plural of behemah (beast). Earliest documented
use: 1382. Behemoth is a huge beast mentioned in the Book of Job 40:15-24.

USAGE:

“The fears were plenty: that customers would end up paying more for declining
service; that the industry behemoth would use its heft to stifle competition.”
Emily Steel, et al; Comcast Is Said to Abandon Bid for Major Rival; The New
York Times; Apr 24, 2015.